Body Organization

by Zahra Khan


  • Cells- the smallest structural unit of an organism and need energy to function
  • Tissues- a group of cells of a similar structure that work together to perform a particular function
  • Organ-several tissues grouped together to make a structure with a special function sucha s the heart, liver or lungs
  • Organ System- a group of organs with closely related functions
  • Organisms-the material structure of an individual life form

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